Attachment to printers&#39; perforating-rules.



S. PALM-ER. ATTACHMENT TO PRINTERS PERFORATING RULES.

APPLICATION FILED APR. 8, 19 08.-

Patented Au l 3, 1909.

SPENCER PALMER, OF FOND DU LAC, WISCONSIN ATTACHMENT TO PRINTERS PERFORATING-RULES.

Specification of Letters Patent.

Patented Aug. 3, 1909.

Application filed April 8, 190a. Serial No. 21 25,852.

To all whom it may concern:

tact therewith when the sheet is printed Be it known that-l, SPENCER PALMER, a upon at the same time that it is perforcitizen of the United States, residing at Fond du Lac, in the county of Fond du Lac and State of l'l isconsin, have invented a new and useful Improvement in Attachments to Printers Pcrforating-ltulcs, of which the fol lowing is a specification.

The present invention relates to the art of tirinting, and more particularly to a novel and improved perforating device by means of which a sheet may be perforated with two or more series of perforations running at an angle to each other at the same time and at one impression.

contemplates a dowhich enables the sheet to be printed at the same time that it is perforated, the inking roller being prcvented from coming into contact with the teeth of the 'ierloratin; rule and all cutting The invention further or injuring of the inking roller being tl'ierchv obviated. The device also operates to liberate the sheet after the iinpressionhas been made and to'prcvcnt the perforating rule from sticking to the sheet.

For a. full understanding of the invention and the merits thereof and also to acquire a knowledge of the details of construction and means for effecting the result, reference is to be had to the following description and. acconnpanying drawings, in which:

Figure I is a perspective view oi one cinbodiincnt oi the invention, lllg. 2 is a similar View of a modified form of theinventiou.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

S 'ieciiically describing the embodiment of the invention shown. in Fig. 1, the letter C designates a pair of perforating rules which intersect and are arranged at substai'itially a right angle to each other, the said perforating' rules consisting of strips of brass or steel which are about an inch in. height and are provided along one edge with a series of teeth. A solid backing A is arranged upon both sides of each of the perforating rules at the bottom thereof and. supported by this backing is a solid strip B of some yielding material such as rubber. These yielding strips if normally project outwardly either flush with the teeth of the perforating rules or slightly beyond the same and serve to prevei'it the inking IOllGTCOlnlfig into conated. When an impression ismade, these yielding strips B are forced inwardly so as to expose the teeth of the perforating rules (J and the said rules operate in the usual n'ianner. As soon however 1e pressure ceases to act upon the strips .L they again. expand and assume their normal shape, tl'ierehy liberating the sheet i and preventing it from adhering thereto.

inv the form of the invention illustrated in Fig. 2, the letters D designate a pair of intersecting perforating rules similar to those shown in Fig. l. Arranged in each of the angular spaces between these perforating' rules,is a solid backing plate A havii'i r a layer B of some yielding material such as rubber dove-tailed thereto. yielding layer B" in turn has a plate C dove tailcd to the outer surface thereof, the said plate C being;- formed with a printing surface: The printing; surfaces of the severai project outwardly either flush with or slightly beyond the teeth of the perforating rules so that when the inking roller is passed over the printing surfaces it will not come in contact with the perforating teeth. l lowcver, when an made and pressure applied to the plates C, the yielding layers lgl will be compressed and the teeth of the pen .retin rules on posed so as to operate in the u oai manner. It may also be mentioned that after the impression has been made, the plates (7 will be again forced out *ard into their normal position. so as to liberate the sheet from the perforating'teethand prevent it iron: ad- 'iering thereto. -With this latter construc tion. the sheet can be perforated at the same time it is printed, while with the construe tion shown in Fig. 1 this cannot be done the inking roller would con act with the strips B and cause them to print as well as the type.

Having thus described is oiaiined as new is:

. 1. In a printers perforating device, the combination of a pair of intersecting perforating rules of flat formation, the said rules being provided at their outer edges with perforating teeth, a in each of? the angle.) between the intersect inc; perforating :rulos, and solid strips .of rubber supported upon the bookings upon opposite sides of the rules, the said strips plates G normallv the invention, what rem the teeth This I impression. is

solid hacking arranged i Q I 929,702

of rubber being adapted to be com ressed erfomting rule, the said tielding materiel P l g to'expose the teeth of the perforating rules eing adapted t0 be compressed to admit of when an impression is made. the plate moving reerwerdly'to expose the 2. In a perforating device, the combineteeth of vtheperforeting rule when an im- 5 tion ofda pfrlioretliilg rulle, a sogd blsgzking at pression is made.

onesieoter e,aaero ie ingmater'iel dove-tailed to the solid ee-king, and SPILNOER PALMER n plate dove-tailed t0 the yielding layer and Witnesses: provided with a printing surface normally R. C. FAIRBANK, 10 projecting outwardly bevond the edge of the M. C. WHEELER. 

